Hi
First of all, im new at this stuff, so bare with me.
I bought one of these:
http://www.ebay.co.uk/itm/SPI-0-96-65k-Color-OLED-Module-For-PIC-AVR-Arduino-/130769001327?pt=LH_DefaultDomain_0&hash=item1e72709b6f
It comes with a test code and a data sheet witch is downloadable here: www.wide.hk/download/65kOLEDdemo.rar
Im in doubt regarding the wiring. I though it would be pretty straight forward, but when I googled it, I found this description:
http://learn.adafruit.com/096-mini-color-oled/wiring

It seems my display is similar (maybe a knockoff -they are both called SSD1331) in the adafruit tutorial they are using a 3.3 V logic shifter? What is that, I why cant I just use the 3.3V pin on my Arduino Uno (or can I?)?
Thanks